CN117014798A

CN117014798A - Information transmission method, carrier phase positioning method and device

Info

Publication number: CN117014798A
Application number: CN202210476518.7A
Authority: CN
Inventors: 方荣一; 任斌; 达人; 任晓涛; 李辉; 张振宇; 于哲; 师源谷
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2023-11-07
Also published as: WO2023208113A1

Abstract

The invention provides an information transmission method, a carrier phase positioning method and a carrier phase positioning device, and relates to the technical field of communication. The information transmission method comprises the following steps: the terminal performs carrier phase measurement according to the first signals and sends carrier phase measurement related information of N first carriers to the location management function LMF entity; wherein N is a positive integer. The invention can solve the problem that no specific scheme exists for reporting carrier phase measurement of an NR system at present.

Description

Information transmission method, carrier phase positioning method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method, a carrier phase positioning method, and an apparatus.

Background

The basic principle of the wireless positioning technology is that a transmitter transmits a pilot signal, a receiver receives and measures the pilot signal, measured values of time delay, angle, phase and the like are obtained, and then corresponding position calculation is carried out to obtain a position estimation value. The positioning scheme which relies on the phase measurement value can improve the positioning accuracy to the millimeter level under the proper condition by means of the high-resolution measurement accuracy brought by the small wavelength of the positioning scheme, such as the measurement resolution is below 8mm under the carrier frequency of 3.5G, and is mainly applied to the global navigation satellite system (Global Navigation Satellite System, GNSS).

The GNSS satellite signals are single carrier sinusoidal signals (i.e., radio frequency sinusoidal signals of a certain fixed frequency) plus a pseudorandom noise (PRN) sequence or PRN code and a navigation data code. To support GNSS carrier phase positioning, the receiver needs to measure carrier phase measurements by measuring satellite signals. Because the GNSS satellite signals are single carrier signals, the receiver can only measure carrier phase corresponding to a single carrier frequency for any GNSS signal. Unlike GNSS satellite signals, the New air interface (NR) system is an orthogonal frequency division multiplexing (Orthogonal frequency division multiplex, OFDM) signal, and a multicarrier sinusoidal signal is adopted, so the current scheme for reporting carrier phase measurement based on GNSS satellite signals is not necessarily applicable to reporting carrier phase measurement of the NR system, and no specific scheme for reporting carrier phase measurement of the NR system is available.

Disclosure of Invention

The invention provides an information transmission method, a carrier phase positioning method and a carrier phase positioning device, which solve the problem that no specific scheme exists in the prior art for reporting carrier phase measurement of an NR system.

In a first aspect, an embodiment of the present invention provides an information transmission method, including:

The terminal performs carrier phase measurement according to the first signals and sends carrier phase measurement related information of N first carriers to a position management function (Location Management Function, LMF) entity;

wherein N is a positive integer.

Optionally, the carrier phase measurement related information includes at least one of: the carrier phase measurement value of the first carrier, the identification information of the first carrier and at least one parameter corresponding to the first carrier;

the at least one parameter is used for indicating the association relationship between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier in the effective frequency domain range where the first carrier is located.

Optionally, the at least one parameter includes: a slope value, and/or a target value for indicating the effective frequency domain range;

wherein the slope value is determined from carrier phase measurements of a plurality of carriers in the effective frequency domain.

Optionally, the identification information includes at least one of: carrier index, center carrier frequency, and carrier spacing.

Optionally, the carrier phase measurement includes at least one of:

the carrier phase of the first carrier measures an absolute value;

The carrier phase of the first carrier and the reference carrier measures a relative value;

and measuring relative values of carrier phases of the target base station and the reference base station on the first carrier.

Optionally, the carrier phase measurement related information further includes: reliability information of the carrier phase measurements;

wherein the reliability information includes at least one of:

indication information for indicating line of sight or non-line of sight, a first path spectral peak slope, a rice factor, a carrier-to-noise ratio, a signal-to-noise ratio, a terminal reception/transmission time error group (Rx/Tx TEG), an antenna phase center offset, a time stamp, a reference signal received power (Orthogonal frequency division multiplex, RSRP), a first path RSRP, an additional path RSRP, a downlink reference signal time difference (Downlink Time Difference of Orthogonal frequency, DL-RSTD), and a downlink departure angle (Downlink Angle of Departure, DL-AOD).

Optionally, the sending carrier phase measurement related information of the N first carriers to the location management function LMF entity includes:

and the terminal sends carrier phase measurement related information of one carrier set or N first carriers in a plurality of carrier sets to the LMF entity.

The terminal transmits carrier phase measurement related information of N carriers on one symbol or a plurality of symbols to the LMF entity.

the terminal sends carrier phase measurement related information of N first carriers to the LMF entity according to a periodic sending mode;

or,

and when the terminal determines that the measurement reporting triggering condition is met, the terminal sends carrier phase measurement related information of the N first carriers to the LMF entity.

Optionally, the first signal is a positioning reference signal (Positioning Reference Signal, PRS) transmitted by a base station.

In a second aspect, an embodiment of the present invention provides an information transmission method, including:

the base station performs carrier phase measurement according to the second signal and sends carrier phase measurement related information of N first carriers to the location management function LMF entity;

wherein N is a positive integer.

Optionally, the carrier phase measurement includes at least one of:

the carrier phase of the first carrier measures an absolute value;

the carrier phase of the first carrier and the reference carrier measure relative values.

wherein the reliability information includes at least one of:

indication information for indicating line of sight or non-line of sight, first path spectral peak slope, rice factor, carrier to noise ratio, signal to noise ratio, TRP reception/transmission time error group (Rx/Tx TEG), antenna phase center offset, reporting time stamp, reference Signal Received Power (RSRP), first path RSRP, additional path RSRP, uplink time of arrival measurement (UL-RTOA), and uplink angle of arrival (Uplink Angle of Arrival, UL-AOA).

the base station transmits carrier phase measurement related information of one carrier set or N first carriers in a plurality of carrier sets to the LMF entity.

the base station transmits carrier phase measurement related information for N carriers over one symbol or more symbols to the LMF entity.

the base station sends carrier phase measurement related information of N first carriers to the LMF entity according to a periodic sending mode;

or,

and when the base station determines that the measurement report triggering condition is met, the base station sends carrier phase measurement related information of N first carriers to the LMF entity.

Optionally, the second signal is a sounding reference signal SRS sent by the terminal.

In a third aspect, an embodiment of the present invention provides a carrier phase positioning method, including:

the method comprises the steps that a Location Management Function (LMF) entity receives carrier phase measurement related information of N first carriers sent by a terminal or a base station; wherein N is a positive integer;

And the LMF entity performs position resolving processing on the terminal according to the carrier phase measurement related information.

Optionally, the carrier phase measurement related information includes: and under the condition that the carrier phase measurement value of the first carrier and at least one parameter corresponding to the first carrier are the same, the LMF entity performs position resolving processing on the terminal according to the carrier phase measurement related information, and the method comprises the following steps:

the LMF entity determines a carrier phase measurement value of a second carrier in an effective frequency domain range where the first carrier is located according to at least one parameter corresponding to the first carrier and the carrier phase measurement value of the first carrier;

the LMF entity determines an optimal carrier phase measurement value from the carrier phase measurement values of the N first carriers and the carrier phase measurement values of the second carriers according to the carrier phase measurement related information;

and the LMF entity performs position resolving processing on the terminal according to the optimal carrier phase measurement value.

In a fourth aspect, an embodiment of the present invention provides an information transmission apparatus, including a memory, a transceiver, and a processor;

wherein the memory is used for storing a computer program; the transceiver is used for receiving and transmitting data under the control of the processor; the processor is configured to read the computer program in the memory and perform the following operations:

Carrying out carrier phase measurement according to the first signals, and sending carrier phase measurement related information of N first carriers to a Location Management Function (LMF) entity;

wherein N is a positive integer.

wherein the reliability information includes at least one of:

the system comprises indication information for indicating the sight distance or the non-sight distance, a first path spectrum peak slope, a Lese factor, a carrier-to-noise ratio, a signal-to-noise ratio, a terminal receiving/transmitting time error group Rx/Tx TEG, an antenna phase center offset, a time stamp, reference signal receiving power RSRP, a first path RSRP, an additional path RSRP, a downlink reference signal time difference DL-RSTD and a downlink departure angle DL-AOD.

Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

and sending carrier phase measurement related information of the N first carriers in one carrier set or a plurality of carrier sets to the LMF.

and sending carrier phase measurement related information of N carriers on one symbol or a plurality of symbols to the LMF entity.

according to the periodic transmission mode, carrier phase measurement related information of N first carriers is transmitted to the LMF entity;

or,

and when the measurement report triggering condition is determined to be met, sending carrier phase measurement related information of the N first carriers to the LMF entity.

In a fifth aspect, an embodiment of the present invention provides an information transmission apparatus, including:

a transmitting unit, configured to perform carrier phase measurement according to the first signal, and transmit carrier phase measurement related information of N first carriers to a location management function LMF entity;

wherein N is a positive integer.

In a sixth aspect, an embodiment of the present invention provides an information transmission apparatus, including a memory, a transceiver, and a processor;

carrying out carrier phase measurement according to the second signal, and sending carrier phase measurement related information of N first carriers to a location management function LMF entity;

wherein N is a positive integer.

wherein the reliability information includes at least one of:

the system comprises indication information for indicating the sight distance or the non-sight distance, a first path spectrum peak slope, a Lese factor, a carrier-to-noise ratio, a signal-to-noise ratio, a TRP receiving/transmitting time error group Rx/Tx TEG, an antenna phase center offset, a reporting time stamp, reference signal receiving power RSRP, a first path RSRP, an additional path RSRP, an uplink arrival time measurement value UL-RTOA and an uplink arrival angle UL-AOA.

and sending carrier phase measurement related information of the N first carriers in one carrier set or a plurality of carrier sets to the LMF entity.

or,

In a seventh aspect, an embodiment of the present invention provides an information transmission apparatus, including:

a transmitting unit, configured to perform carrier phase measurement according to the second signal, and transmit carrier phase measurement related information of the N first carriers to the location management function LMF entity;

wherein N is a positive integer.

In an eighth aspect, an embodiment of the present invention provides a carrier phase positioning apparatus, including a memory, a transceiver, and a processor;

receiving carrier phase measurement related information of N first carriers sent by a terminal or a base station; wherein N is a positive integer;

and according to the carrier phase measurement related information, performing position resolving processing on the terminal.

In a ninth aspect, an embodiment of the present invention provides a carrier phase positioning apparatus, including:

a receiving unit, configured to receive carrier phase measurement related information of N first carriers sent by a terminal or a base station; wherein N is a positive integer;

and the processing unit is used for executing position resolving processing on the terminal according to the carrier phase measurement related information.

In a tenth aspect, an embodiment of the present invention provides a processor-readable storage medium storing a computer program for causing the processor to execute the steps of the information transmission method on the terminal side or the steps of the information transmission method on the base station side or the steps of carrier phase positioning on the LMF entity side as described above.

The technical scheme of the invention has the beneficial effects that:

in the scheme, under the NR system, the terminal or the base station can perform carrier phase measurement according to the reference signal and send carrier phase measurement related information of N carriers to the LMF entity, so that reporting of the carrier signal measurement related information under the NR system is realized, and the problem that no specific scheme exists for reporting carrier phase measurement of the NR system at present is solved.

Drawings

Fig. 1 shows a flowchart of an information transmission method at a terminal side according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of determining slope values in accordance with an embodiment of the present invention;

fig. 3 is a flowchart of an information transmission method at a base station side according to an embodiment of the present invention;

fig. 4 is a flowchart of a carrier phase positioning method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a windowing operation according to an embodiment of the present invention;

fig. 6 shows one of block diagrams of the information transmission apparatus on the terminal side of the embodiment of the present invention;

fig. 7 shows a second block diagram of the information transmission device on the terminal side according to the embodiment of the present invention;

fig. 8 shows one of block diagrams of an information transmission apparatus at a base station side of an embodiment of the present invention;

fig. 9 shows a second block diagram of the information transmission apparatus at the base station side according to the embodiment of the present invention;

Fig. 10 shows a block diagram of a carrier phase positioning device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the invention. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

In addition, the terms "system" and "network" are often used interchangeably herein.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may each be made between a network device and a terminal device using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

In the embodiment of the application, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in embodiments of the present application means two or more, and other adjectives are similar.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The NR system is an OFDM signal, employing a multicarrier sinusoidal signal, with the data to be communicated being modulated on each subcarrier. To support NR carrier phase positioning, the receiver needs to measure the NR signal or carrier phase measurements.

Since the NR signal is a multi-carrier signal, for a signal from any one of the terminals (UE) or base stations, the receiver may provide a phase measurement corresponding to a certain carrier, or may provide a phase measurement corresponding to multiple carriers, and a potential advantage of providing multiple carrier phase measurements is the ability to quickly resolve integer ambiguity in the carrier phase measurements using a correlation algorithm (e.g., the Chinese Remainder Theorem (CRT) algorithm). It is considered that the current GNSS carrier-phase measurement reporting mode is not necessarily applicable to NR carrier-phase measurement reporting. Therefore, for NR carrier phase positioning, the embodiments of the present invention provide an information transmission method, a carrier phase positioning method, and a terminal, so as to solve the problem that there is no specific solution for reporting carrier phase measurement of an NR system at present.

The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

As shown in fig. 1, an embodiment of the present invention provides an information transmission method, including the steps of:

step 11: and carrying out carrier phase measurement according to the first signals, and transmitting carrier phase measurement related information of the N first carriers to the location management function LMF entity.

Wherein N is a positive integer.

Alternatively, the first signal may be a PRS transmitted by a base station. Such as in NR systems where the signal is transmitted on a plurality of symbols and a plurality of carriers, the carriers herein may also be referred to as subcarriers.

For example: the terminal may receive PRSs transmitted by one base station on at least one of a plurality of carriers, PRSs transmitted by a plurality of base stations on the same carrier, or the like. And the terminal performs carrier phase measurement according to the received at least one PRS to obtain a carrier phase measurement result.

For example, a base station (or TRP) may transmit PRSs on M carriers on L sets of carriers (CCs) of G symbols; where G, L, M is a positive integer, one symbol may include L carrier sets, and one carrier set may include M carriers.

The terminal receives PRS on M carriers of the L carrier sets of G symbols, and measures carrier phase measurement results, such as carrier phase measurement values (first-path phase or composite phase of multiple paths), reliability information of the carrier phase measurement values, and the like, on M carriers of the L carrier sets of G symbols. The reliability information is used to indicate the reliability of the carrier phase measurement value, for example, the LMF may select a plurality of optimal carrier phase measurement values based on the reliability information to perform a position resolving process, for example, may use algorithms such as multi-symbol filtering, phase-locked loop (PLL), chinese Remainder Theorem (CRT), and differential processing to perform the position resolving process.

In the scheme, under the NR system, the terminal can perform carrier phase measurement according to the reference signal and send carrier phase measurement related information of N carriers to the LMF entity, so that reporting of the carrier signal measurement related information under the NR system is realized, and the problem that no specific scheme exists for reporting the carrier phase measurement of the NR system at present is solved.

Optionally, the terminal performs measurement according to PRS sent by the base station to obtain a carrier phase measurement result, and sends the carrier phase measurement related information to the LMF. Wherein the carrier phase measurement related information includes at least one of: the carrier phase measurement value of the first carrier, the identification information of the first carrier and at least one parameter corresponding to the first carrier; the at least one parameter is used for indicating the association relationship between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier in the effective frequency domain range where the first carrier is located.

Alternatively, the carrier phase measurement may be in radians (Rad) or periods (Cycle).

For example: the terminal and LMF alignment may be pre-configured (e.g., protocol pre-determined or network side configured) to determine which carrier phase measurement related information or information needs to be reported. At this time, the carrier phase measurement related information reported by the terminal may include the carrier phase measurement value of the first carrier, without including the identification information of the first carrier.

Also for example: the carrier phase measurement related information reported by the terminal also comprises: the carrier phase measurement value of the first carrier and the identification information of the first carrier. In this way, carrier phase measurement values of the N first carriers can be dynamically reported between the terminal and the LMF. If the carrier phase measurement value of the carrier with better performance can be selected for reporting, the positioning accuracy is also improved.

Also for example: the terminal and LMF alignment may be pre-configured (e.g., protocol pre-determined or network side configured) to determine which carrier phase measurement related information or information needs to be reported. The carrier phase measurement related information reported by the terminal at this time may include: the carrier phase measurement value of the first carrier and at least one parameter corresponding to the first carrier; the at least one parameter is used for indicating the association relationship between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier in the effective frequency domain range where the first carrier is located.

The valid frequency domain range may be preconfigured (such as a network side indication or a protocol convention, etc.), or the valid frequency domain range may be dynamically indicated. For example: under the condition that the effective frequency domain range is preconfigured, a parameter can be used for indicating the association relation between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier in the effective frequency domain range where the first carrier is located. Another example is: in the case that the effective frequency domain range is dynamically indicated, the effective frequency domain range may be indicated by one parameter, and the other parameter indicates an association relationship between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier in the effective frequency domain range where the first carrier is located.

In this embodiment, the terminal may obtain, by reporting the carrier phase measurement values of the N first carriers and at least one parameter corresponding to each first carrier, the carrier phase measurement values of the plurality of second carriers associated with each first carrier according to the carrier phase measurement values of the N first carriers and at least one parameter corresponding to each first carrier at the LMF entity side, so as to ensure that the LMF entity side obtains carrier phase measurement values of more carriers, and reduce reporting overhead, and facilitate improving positioning accuracy.

Also for example: the carrier phase measurement related information includes: the carrier phase measurement value of the first carrier, the identification information of the first carrier and at least one parameter corresponding to the first carrier; the at least one parameter is used for indicating the association relationship between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier in the effective frequency domain range where the first carrier is located. Therefore, the carrier phase measurement values of N first carriers can be dynamically reported between the terminal and the LMF through the reporting of the identification information, for example, the carrier phase measurement values of the carriers with better performance can be selected for reporting, and the positioning accuracy is also facilitated to be improved. And at least one parameter corresponding to each first carrier is reported, so that the LMF entity side can obtain carrier phase measurement values of a plurality of second carriers associated with each first carrier according to the carrier phase measurement values of the N first carriers and at least one parameter corresponding to each first carrier, thereby ensuring that the LMF entity side obtains carrier phase measurement values of more carriers, reducing reporting cost and being beneficial to improving positioning accuracy.

Wherein the carrier phase measurements may include, but are not limited to, at least one of:

the carrier phase of the first carrier measures an absolute value;

For example, for multiple carriers, the carrier phase measurements on each carrier, i.e., the absolute values of the carrier phase measurements of the first carrier and the reference carrier, may be measured independently; phase measurements, i.e., carrier phase measurements relative values, for each carrier with respect to a reference carrier may also be measured. The carrier phase measurement relative value may be a difference value between the carrier phase measurement values of each carrier and the reference carrier, or may be a ratio of the carrier phase measurement values of each carrier and the reference carrier.

In addition, for one carrier, the terminal may receive PRSs for multiple base stations on the carrier, and the terminal may measure carrier phase measurements for each base station relative to a reference base station, i.e., the carrier phase measurements relative values of the target base station and the reference base station. The carrier phase measurement relative value may be a difference value between the carrier phase measurement values of each base station and the reference base station, or a ratio of the carrier phase measurement values of each base station and the reference base station.

Wherein the identification information includes, but is not limited to, at least one of: carrier index, center carrier frequency, and carrier spacing.

For example, the bandwidth range corresponding to the center carrier frequency may include a plurality of carriers, where a distance between adjacent carriers is a carrier interval (or called a subcarrier interval), and each carrier corresponds to a respective carrier index (or called a carrier number, a carrier ID, etc.). The terminal then reports to the LMF: the carrier index, the center carrier frequency, the carrier interval and other identification information can enable the LMF to know which carrier is the carrier phase measurement value of the received carrier phase measurement value, for example, the frequency corresponding to the carrier can be determined according to the carrier index, the carrier interval and the center carrier frequency.

In addition, the expression mode of reporting carrier frequency can be embodied by combining the ratio value of the reporting carrier frequency relative to the central carrier frequency with the central carrier frequency or subcarrier ID and matching with a predefined subcarrier frequency table and the like, and the expression mode is also in the protection scope of the reporting scheme.

Optionally, the at least one parameter includes: a slope value, and/or a target value for indicating the effective frequency domain range; wherein the slope value is determined from carrier phase measurements of a plurality of carriers in the effective frequency domain.

For example, the slope value may be determined by carrier phase measurement values of a plurality of carriers in an effective frequency domain range where each first carrier is located, and the correlation between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier is indicated by the slope value in the effective frequency domain range where the first carrier is located. Referring to fig. 2, the horizontal axis represents the carrier index, the vertical axis represents the carrier phase measurement, for example, an effective frequency domain range from carrier 50 to carrier 150, a straight line or curve may be determined based on carrier phase measurement of a plurality of carriers from carrier 50 to carrier 150, for example, selecting carrier 110 as the first carrier (i.e. selecting a target carrier or reference carrier) may indicate the association between carrier 50 to carrier 150 and carrier phase measurement of other carriers and the first carrier through the slope value of the straight line or curve.

It should be noted that, in the embodiment of the present invention, the carrier phase measurement values of the plurality of carriers in the effective frequency domain where the first carrier is located may be indicated by a slope value, and how to determine the slope value specifically, the embodiment of the present invention is not limited to this.

Wherein the reliability information includes at least one of:

Optionally, the reliability information may be used to indicate the reliability of the carrier phase measurement value, for example, the LMF side may select a plurality of carrier phase measurement values with optimal performance according to the reliability information, and perform position resolving, so as to improve positioning accuracy.

In this embodiment, when the terminal reports the carrier phase measurement related information of the plurality of carriers to the LMF entity, the terminal may support reporting the carrier phase measurement related information of the N first carriers in one carrier set to the LMF entity, or may support reporting the carrier phase measurement related information of the N first carriers in the plurality of carrier sets.

For example: when reporting the carrier phase measurement related information of N first carriers in the multiple carrier sets, the carrier phase measurement related information of the same number of first carriers may be reported for each carrier set, where the number of carrier phase measurement values reported by each carrier set to the first carriers may be preconfigured or dynamically indicated, or otherwise, the embodiment of the present invention is not limited thereto. Alternatively, carrier phase measurement related information of different numbers of first carriers may be reported for different carrier sets. Optionally, the carrier set identifier information may be reported for reporting multiple carrier sets at the same time, so that the LMF entity may learn which carrier set is reported by the terminal as the first carrier in the carrier set.

Wherein, one carrier set may include a plurality of carriers in a bandwidth range corresponding to the center carrier and a partial frequency domain range.

In this embodiment, when the terminal reports the carrier phase measurement related information of the plurality of carriers to the LMF entity, the terminal may support reporting the carrier phase measurement related information of the N first carriers on one symbol to the LMF entity, or may support reporting the carrier phase measurement related information of the N first carriers in the plurality of symbols.

For example: when reporting the carrier phase measurement related information of N first carriers in the plurality of symbols, the carrier phase measurement related information of the same number of first carriers may be reported for each symbol, and at this time, the number of carrier phase measurement values of the first carriers reported by each carrier set may be preconfigured or dynamically indicated, or otherwise, the embodiment of the present invention is not limited thereto. Alternatively, carrier phase measurement related information of different numbers of first carriers may be reported for different symbols. Optionally, the carrier set identifier information may be reported for reporting multiple symbols at the same time, so that the LMF entity may learn which symbol the terminal reports the first carrier.

or when the terminal determines that the measurement report triggering condition is met, sending carrier phase measurement related information of the N first carriers to the LMF entity.

The measurement reporting triggering condition may start according to a positioning requirement, or a parameter value of reliability information (such as RSRP/SNR/CNR) reaches a first threshold, where the first threshold may be agreed by a protocol or configured by a network side, and the embodiment of the present application is not limited.

In the scheme of the application, a scheme for transmitting the relevant information of the carrier signal measurement is provided for the multi-carrier signal under the NR system, and the problem that no specific scheme exists for reporting the carrier phase measurement of the NR system at present is solved. The scheme does not provide a mode for reporting various carrier signal measurement related information, so that signaling overhead can be saved, and positioning accuracy can be improved; meanwhile, the reliability information of the carrier phase measurement value is reported, so that the LMF entity side can screen the carrier phase measurement value with higher reliability according to the information to perform position resolving processing, and the positioning accuracy is improved.

The terminal according to the embodiment of the application can be a device for providing voice and/or data connectivity for a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present application are not limited in this respect.

As shown in fig. 3, an embodiment of the present invention provides an information transmission method, including the following steps:

step 31: the base station performs carrier phase measurement according to the second signal and sends carrier phase measurement related information of N first carriers to the location management function LMF entity;

wherein N is a positive integer.

Alternatively, the second signal may be an SRS transmitted by the terminal. Such as in NR systems, a multi-carrier signal, the carriers herein may also be referred to as subcarriers.

For example: the base station may receive an SRS transmitted by one terminal on at least one of the plurality of carriers, or an SRS transmitted by a plurality of terminals on the same carrier, or the like. And the terminal performs carrier phase measurement according to the received at least one SRS to obtain a carrier phase measurement result.

For example, a terminal may transmit SRS on M carriers on L sets of carriers (CCs) of G symbols; where G, L, M is a positive integer, one symbol may include L carrier sets, and one carrier set may include M carriers.

The base station receives SRS on M carriers of the L carrier sets of G symbols, and measures to obtain carrier phase measurement results, such as a first path phase, a carrier phase measurement value, reliability information of the carrier phase measurement value, and the like, on M carriers of the L carrier sets of G symbols. The reliability information is used to indicate the reliability of the carrier phase measurement value, for example, the LMF may select a plurality of optimal carrier phase measurement values based on the reliability information to perform a position resolving process, for example, a multi-symbol filtering, a phase-locked loop (PLL), a Chinese Remainder Theorem (CRT), a differential algorithm, and the like may be used to perform the position resolving process.

In the scheme, aiming at the NR system, the base station can carry out carrier phase measurement according to the reference signal and send carrier phase measurement related information of N carriers to the LMF entity, so that the reporting of the carrier signal measurement related information under the NR system is realized, and the problem that no specific scheme exists in the current reporting of the carrier phase measurement aiming at the NR system is solved.

Optionally, the base station performs measurement according to the SRS sent by the terminal, obtains a carrier phase measurement result, and measures related information to the carrier phase. Wherein the carrier phase measurement related information includes at least one of: the carrier phase measurement value of the first carrier, the identification information of the first carrier and at least one parameter corresponding to the first carrier; the at least one parameter is used for indicating the association relationship between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier in the effective frequency domain range where the first carrier is located.

For example: the base station and LMF alignment may be pre-configured (e.g., protocol pre-determined or network side configured) to determine which carrier phase measurement related information or information needs to be reported. At this time, the carrier phase measurement related information reported by the base station may include the carrier phase measurement value of the first carrier, without including the identification information of the first carrier.

Also for example: the carrier phase measurement related information reported by the base station also comprises: the carrier phase measurement value of the first carrier and the identification information of the first carrier. In this way, carrier phase measurement values of the N first carriers can be dynamically reported between the base station and the LMF. If the carrier phase measurement value of the carrier with better performance can be selected for reporting, the positioning accuracy is also improved.

Also for example: the base station and LMF alignment may be pre-configured (e.g., protocol pre-determined or network side configured) to determine which carrier phase measurement related information or information needs to be reported. The carrier phase measurement related information reported by the base station at this time may include: the carrier phase measurement value of the first carrier and at least one parameter corresponding to the first carrier; the at least one parameter is used for indicating the association relationship between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier in the effective frequency domain range where the first carrier is located.

In this embodiment, the base station may obtain, by reporting the carrier phase measurement values of the N first carriers and at least one parameter corresponding to each first carrier, the carrier phase measurement values of the plurality of second carriers associated with each first carrier according to the carrier phase measurement values of the N first carriers and at least one parameter corresponding to each first carrier at the LMF entity side, so as to ensure that the LMF entity side obtains carrier phase measurement values of more carriers, and reduce reporting overhead, and facilitate improving positioning accuracy.

Also for example: the carrier phase measurement related information includes: the carrier phase measurement value of the first carrier, the identification information of the first carrier and at least one parameter corresponding to the first carrier; the at least one parameter is used for indicating the association relationship between the carrier phase measurement value of the second carrier and the carrier phase measurement value of the first carrier in the effective frequency domain range where the first carrier is located. Therefore, the base station and the LMF can dynamically report the carrier phase measurement values of the N first carriers through the report of the identification information, for example, the carrier phase measurement values of the carriers with better performance can be selected for reporting, and the positioning accuracy is also facilitated to be improved. And at least one parameter corresponding to each first carrier is reported, so that the LMF entity side can obtain carrier phase measurement values of a plurality of second carriers associated with each first carrier according to the carrier phase measurement values of the N first carriers and at least one parameter corresponding to each first carrier, thereby ensuring that the LMF entity side obtains carrier phase measurement values of more carriers, reducing reporting cost and being beneficial to improving positioning accuracy.

Optionally, the carrier phase measurement includes at least one of:

the carrier phase of the first carrier measures an absolute value;

For example, the bandwidth range corresponding to the center carrier frequency may include a plurality of carriers, where a distance between adjacent carriers is a carrier interval (or called a subcarrier interval), and each carrier corresponds to a respective carrier index (or called a carrier number, a carrier ID, etc.). The base station then reports to the LMF: the carrier index, the center carrier frequency, the carrier interval and other identification information can enable the LMF to know which carrier is the carrier phase measurement value of the received carrier phase measurement value, for example, the frequency corresponding to the carrier can be determined according to the carrier index, the carrier interval and the center carrier frequency.

wherein the reliability information includes at least one of:

In this embodiment, when reporting carrier phase measurement related information of multiple carriers to the LMF entity, the base station may support reporting carrier phase measurement related information of N first carriers in one carrier set to the LMF entity, or may support reporting carrier phase measurement related information of N first carriers in multiple carrier sets.

For example: when reporting the carrier phase measurement related information of N first carriers in the multiple carrier sets, the carrier phase measurement related information of the same number of first carriers may be reported for each carrier set, where the number of carrier phase measurement values reported by each carrier set to the first carriers may be preconfigured or dynamically indicated, or otherwise, the embodiment of the present invention is not limited thereto. Alternatively, carrier phase measurement related information of different numbers of first carriers may be reported for different carrier sets. Optionally, the carrier set identifier information may be reported for reporting multiple carrier sets at the same time, so that the LMF entity may learn which carrier set is reported by the base station as the first carrier in the carrier set.

In this embodiment, when the base station reports the carrier phase measurement related information of the plurality of carriers to the LMF entity, the base station may support reporting the carrier phase measurement related information of the N first carriers on one symbol to the LMF entity, or may support reporting the carrier phase measurement related information of the N first carriers in the plurality of symbols.

For example: when reporting the carrier phase measurement related information of N first carriers in the plurality of symbols, the carrier phase measurement related information of the same number of first carriers may be reported for each symbol, and at this time, the number of carrier phase measurement values of the first carriers reported by each carrier set may be preconfigured or dynamically indicated, or otherwise, the embodiment of the present invention is not limited thereto. Alternatively, carrier phase measurement related information of different numbers of first carriers may be reported for different symbols. Optionally, the carrier set identification information may be reported for reporting multiple symbols at the same time, so that the LMF entity may learn which symbol the base station reports the first carrier.

or,

The measurement reporting trigger condition may be that a parameter value of reliability information (such as RSRP/SNR/CNR) reaches a first threshold, where the first threshold may be agreed by a protocol or configured by a network side, and the embodiment of the present application is not limited.

The base station according to the embodiment of the application can comprise a plurality of cells for providing services for the terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiment of the present application. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

As shown in fig. 4, the embodiment of the present invention further provides a carrier phase positioning method, which includes the following steps:

step 41: the LMF entity receives carrier phase measurement related information of N first carriers sent by a terminal or a base station; wherein N is a positive integer.

Step 42: and the LMF entity performs position resolving processing on the terminal according to the carrier phase measurement related information.

Optionally, the LMF entity may determine an optimal carrier phase measurement value from carrier phase measurement values of the N first carriers according to the carrier phase measurement related information; and the LMF entity performs position resolving processing on the terminal according to the optimal carrier phase measurement value, so that the positioning accuracy is ensured.

For example: the LMF entity may determine an optimal carrier phase measurement value from the carrier phase measurement values of the N first carriers according to the reliability information included in the carrier phase measurement related information.

Also for example: the carrier phase measurement related information includes: the LMF entity may determine, according to the carrier phase measurement value of the first carrier and the at least one parameter corresponding to the first carrier, a carrier phase measurement value of a second carrier within an effective frequency domain where the first carrier is located; determining an optimal carrier phase measurement value from the carrier phase measurement values of the N first carriers and the carrier phase measurement values of the second carrier according to the carrier phase measurement related information (such as reliability information); and performing a position resolving process on the terminal according to the optimal carrier phase measurement value, thereby improving positioning accuracy.

The information transmission method and the carrier phase positioning method of the present invention are described below with reference to specific embodiments:

example 1: (downlink UE-Assisted positioning scenario)

Base station side:

step 1: TRP transmits Tx TEG ID, TRP antenna phase center offset to LMF, and PRS on 1 carrier set (Carrier Component, CC) of 1 symbol (symbol);

UE side:

step 1: receiving PRS;

step 2: according to the received PRS, a time domain impulse response (CIR) is measured, a slope Sp of a first path spectrum peak in a power delay spectrum (PDP) is calculated (to be compensated for a whole week, for example, by a phase function of matlab), a window is performed on the CIR, the CIR of the first path portion is selected, the remaining sampling points are set to zero, and the processed CIR is converted into a frequency domain channel response (CFR) as shown in fig. 5.

For example: taking the carrier phase measurement related information of 3 carriers (or subcarriers) reported by one CC as an example, calculating the phases Phi1, phi2 and Phi3 of subcarriers C1, C2 and C3 positioned in 1 CC, taking C1 as a reference subcarrier in the CC1, dividing the phases of the rest subcarriers C2 and C3 by the phase of C1 to obtain Phi2/Phi1 and Phi3/Phi1, respectively calculating slope values S1, S2 and S3 fitted by K+1 subcarriers (C1- (K-1)/2:C1+ (K-1)/2) nearby the C1, C2 and C3 subcarriers on 1 CC according to the slope effective length K (or called an effective frequency domain range), and calculating carrier phase measurement reliability information;

Step 3: reporting the phases Phi1, phi2/Phi1, phi3/Phi1 (with the unit of cycle) of 3 subcarriers of C1, C2 and C3 in 1 symbol with the period of 5ms, slope values S1, S2 and S3, subcarrier IDs, subcarrier intervals, center carrier frequency, slope effective length K, reference subcarrier IDs and carrier phase measurement value reliability information to LMF;

the carrier phase measurement reliability information includes LOS/NLOS indication information (soft value or hard value) corresponding to the carrier phase measurement calculated according to CIR/CFR in step 2, a first path spectrum peak slope Sp, rice factor, carrier-to-noise ratio (CNR), signal-to-noise ratio (SNR), reporting timestamp, reference Signal Received Power (RSRP), first path RSRP, additional path RSRP, downlink reference signal time difference (DL-RSTD), DL-AOD, TRP/UE antenna phase center offset, UE transmit-receive Time Error Group (TEG) related information (e.g., tegid), etc.;

LMF side:

step 1: the LMF receives the report amount reported by the UE and the base station (such as TRP), and selects a carrier phase measurement value according to the reliability information of the carrier phase measurement value. When using the measurement of TRP by the UE, the carrier phase measurement with the closest time stamp needs to be selected, and the carrier phase measurement at this time is more reliable. In addition, subsequent processing may be performed, such as calculating the frequency bin of the reference subcarrier C1 in CC1, and then obtaining the phase value of C2 using phi2=phi1 (phi2/phi1). For example, the phase value of the [ C2-K/2:c2+k/2] subcarrier can be calculated according to the phase Phi2 and the slope value S2 of the C2 subcarrier, for example, the phase corresponding to the c2+5 subcarrier is mod (Phi 1 x Phi2/Phi1+5 x S2, 1). Then, selecting proper phase values of sub-carriers, estimating the whole cycle by using a Chinese Remainder Theorem (CRT), recovering more accurate propagation delay, and then combining carrier phase measurement values of positioning reference equipment (PRU) (the mode of reporting the carrier phase measurement values by the PRU is the same as that of the steps 2 and 3), and differentiating again to obtain carrier phase double difference values of frequency offset when the carrier phase double difference values are eliminated for subsequent position calculation.

Example 2: (downlink UE-Assisted positioning scenario)

Base station side:

step 1: TRPi, TRPj transmits the respective Tx TEG ID, TRP antenna phase center offset to LMF, and PRS on 2 CCs of 5 symbols (e.g., CC1, CC 2);

UE side:

step 1: the PRS is received and the data is transmitted,

step 2: according to the received signal, a time domain impulse response (CIR) is measured, a slope Sp of a peak of a first path spectrum in a power delay spectrum (PDP) (which needs to be compensated for the whole week, such as by a phase function of matlab) is calculated, a window operation is performed on the CIR, the CIR of the first path portion is selected, the rest sampling points are set to zero (the same as in the embodiment 1), and the processed CIR is converted into a frequency domain channel response (CFR).

For example: taking the carrier phase measurement related information of 3 carriers (or subcarriers) reported by a CC as an example, calculating the phases Phi1, phi2 and Phi3 of the subcarriers C1, C2 and C3 in the CC1 and the phases Phi1', phi2 and Phi3' of the subcarriers D1, D2 and D3 in the CC2, respectively calculating slope values S1', S2' and S3' fitted by K+1 subcarriers (C1- (K-1)/2:C1:C1+ (K-1)/2) near the subcarriers C1, C2 and C3 on each symbol, CC1 according to the slope effective length K, and calculating the phase measurement reliability information, wherein the slope values S1, S2 and S3 are fitted by K+1 subcarriers (D1- (K-1)/2:D1:D1+ (K-1)/2) near the subcarriers D1, and the CC 2;

Step 3: through LMF triggering, phases Phi1, phi2, phi3, phi1', phi2', phi3 '(with the units of rad and the size of 0-2 pi) of the subcarriers of C1, C2, C3 and D1, D2 and D3 on the CC1 are reported on 5 symbol, the phases can be the phase values of two TRPs measured for UE (i.e. the respective values are reported respectively), the difference of the phase values of the two TRPs (i.e. the reported difference of the target TRP and the reference TRP), such as the difference of neighbor TRP and reference TRP, slope values S1, S2, S3, S1', S2', S3', the carrier frequency point/center carrier frequency of the center carrier frequency coordination carrier frequency (i.e. the frequency ratio can be quantized) subcarrier ID, slope effective length K and carrier phase reliability information are given to LMF;

the carrier phase measurement value reliability information includes LOS/NLOS indication information, a first path spectrum peak slope, a rice factor, a carrier-to-noise ratio (CNR), a signal-to-noise ratio (SNR), a reporting timestamp, a Reference Signal Received Power (RSRP), a first path RSRP, an additional path RSRP, a reference signal time difference RSTD, a DL-AOD, a TRP/UE antenna phase center offset, UE transmit-receive Time Error Group (TEG) related information (e.g., TEG ID) and the like, which are calculated according to the CIR/CFR in step 2;

LMF side:

step 1: the LMF receives the reported quantity reported by the UE and the base station (such as TRP), and selects reliable carrier phase measurement value from each of 5 symbols according to the carrier phase measurement value reliability information. When using the measurement of TRP by the UE, the carrier phase measurement with the closest time stamp needs to be selected, and the carrier phase measurement at this time is more reliable. In addition, a subsequent process may be performed, and a phase value of the [ C1-K/2:c1+k/2] subcarrier may be calculated according to the phase Phi1 and the slope value S1 of the C1 subcarrier, for example, a phase corresponding to the c1+5 carrier is mod (Phi 1+5×s1, 2pi). Next, using carrier phase measurements of 5 symbols, each symbol including phase measurements of multiple subcarriers (including reported subcarrier phases and phases of surrounding subcarriers fitted in combination with respective slopes), tracking carrier phase values (which may be single subcarrier or parallel tracking, i.e., simultaneous tracking of one or more subcarriers) using a multi-symbol continuous tracking technique such as a Phase Locked Loop (PLL), and combining carrier phase measurements of a positioning reference device (PRU) (the manner in which the PRU reports carrier phase measurements is the same as steps 2, 3), carrier phase measurements of the frequency offset at the time of cancellation may be obtained via double differencing, and input into a filtering algorithm such as kalman filtering for position resolution.

Example 3: (uplink BS-assisted positioning scenario)

UE side:

step 1: the UE transmits a UE Tx TEG ID, a UE antenna phase center offset to the LMF, and transmits SRS on 2 CCs (CC 1, CC 2) of 5 symbols;

base station side:

step 1: the SRS is received and the received SRS is transmitted to the mobile station,

step 2: according to the received SRS, measuring a time domain impulse response (CIR), calculating the slope Sp of a first path spectrum peak (needing to be compensated for the whole week, such as by a phase function of matlab) in a power delay spectrum (PDP), performing windowing operation on the CIR, selecting the CIR of the first path part, setting the rest sampling points to zero (the same as in the embodiment 1), and converting the processed CIR into a frequency domain channel response (CFR).

For example: taking carrier phase measurement related information of 3 carriers (or sub-carriers) reported by a CC as an example, tracking phase values of a plurality of carriers by using a multi-symbol continuous tracking technology such as a phase-locked loop (PLL) and the like, obtaining each sub-carrier phase Phi1_est, phi2_est, phi3_est, phi1_est, phi1'_est, phi2' _est and Phi3'_est of the tracking C1, C2 and C3 sub-carriers (located in the CC 1) and D1, D2 and D3 sub-carriers (located in the CC 2), and calculating slope values (adjacent to the C1, D1) and the C1 and C2 sub-carrier phases by using C1, D1 as reference sub-carriers, namely, calculating slope values of Phi1_est, phi2_est-Phi1_est, phi3_est, phi1_est, phi1' _2_2_2, phi1 '-, phi2' -, K1 '- [ K1', and K1, and calculating slope values (adjacent to the C1, D1 and D1) of the carrier phases of the rest sub-carriers; based on the carrier phase measurement reliability information, a reliable carrier phase measurement is selected for each of the 5 symbols.

Step 3: reporting the phases hi1_est, phi2_est-Phi1_est, phi3_est-Phi1_est, phi2' _est-Phi1' _est, phi3' _est-Phi1' _est (in rad) of the C1, C2, C3, D1, D2, D3 sub-carriers on h symbols (5 is more than or equal to 1), slope values S1, S2, S3, S1', S2', S3', sub-carrier IDs, BWP (Bandwidth Part) IDs, center frequencies, sub-carrier intervals, reference sub-carrier IDs, slope effective lengths K and carrier phase measurement value reliability information to the LMF; the carrier phase measurement value reliability information includes LOS/NLOS indication information, a first path spectrum peak slope, a rice factor, a carrier-to-noise ratio (CNR), a signal-to-noise ratio (SNR), a timestamp, a Reference Signal Received Power (RSRP), a first path RSRP, an additional path RSRP, UL-AOA, TRP/UE antenna phase center offset, TRP Time Error Group (TEG) related information, and the like, which are calculated according to the CIR/CFR in step 2;

LMF side:

step 1: the LMF receives report amount reported by the UE and the base station, and selects indication information as carrier phase measurement values of LOS, large initial path spectrum peak slope Sp, high RSRP value, TEG ID matching, signal to noise ratio and high carrier to noise ratio. In addition, when the measured value of TRPi (i=1 to 3) to the UE is used, the carrier phase measured value with the closest time stamp needs to be selected, and the carrier phase measured value at this time is more reliable, and the subsequent processing can be performed. The frequency bin of the reference subcarrier C1 in CC1 is calculated, and then the phase value of C2 is obtained by using the Phi 2_est=phi 1_est (Phi 2_est/Phi 1_est). For example, the phase value of the [ C1-K/2:c1+k/2] subcarrier may be calculated according to the phase Phi1 est and the slope value S1 of the C1 subcarrier, where the phase corresponding to the c1+5 carrier is Phi1_est+phi1+5×s1. Then, selecting proper subcarrier phase values, estimating the whole cycle by using a Chinese Remainder Theorem (CRT), recovering more accurate propagation delay, combining carrier phase measurement values of positioning reference equipment (PRU) (the mode of reporting the carrier phase measurement values by the PRU is the same as that of the steps 2 and 3), obtaining carrier phase measurement values of eliminating time frequency offset through double difference, and inputting the carrier phase measurement values into a filtering algorithm such as Kalman filtering (EKF) for position calculation.

Example 4: (downlink UE-Assisted positioning scenario)

Base station side:

step 1: TRP transmits Tx TEG ID, TRP antenna phase center offset to LMF, and PRS on 1 CC of 1 symbol;

UE side:

step 1: the PRS is received and the data is transmitted,

step 2: according to the received PRS, measuring time domain impulse response (CIR), calculating slope Sp of a first path spectrum peak in a power delay spectrum (PDP) (needing to compensate the whole circumference, such as by a phase function of matlab), windowing CIR, selecting CIR of the first path part, setting the rest sampling points to zero (shown in figure 5), and converting the processed CIR into frequency domain channel response (CFR).

For example: taking the example of carrier phase measurement related information of 3 carriers (or subcarriers) reported by one CC, calculating the phases Phi1, phi2/Phi1 and Phi3/Phi1 of subcarriers C1, C2 and C3 positioned in 1 CC, respectively calculating 1 symbol according to the effective length K of the slope, fitting slope values S1, S2 and S3 of K+1 subcarriers (C1- (K-1)/2:C1+ (K-1)/2) near the C1, C2 and C3 subcarriers on 1 CC, and calculating the reliability information of the carrier phase measurement;

step 3: triggering by UE, reporting differential phases between adjacent TRP and reference TRP of C1, C2 and C3 sub-carriers on 1 symbol or differential phases (unit is cycle) between different receiving antennas, slope values S1, S2 and S3, sub-carrier ID, center frequency, effective length K of slope, reference sub-carrier ID and reliability information of carrier phase measurement value to LMF; the carrier phase measurement value reliability information includes LOS/NLOS indication information, a first path spectrum peak slope, a rice factor, a carrier-to-noise ratio (CNR), a signal-to-noise ratio (SNR), a timestamp, a Reference Signal Received Power (RSRP), a first path RSRP, an additional path RSRP, RSTD, DL-AOD, a TRP/UE antenna phase center offset, a UE Time Error Group (TEG), and the like, which are calculated according to the CIR/CFR in step 2;

LMF side:

step 1: and the LMF receives the report amount reported by the UE and the TRP, and selects a carrier phase measurement value according to the carrier phase measurement value reliability information. When using the measurement of TRP by the UE, the carrier phase measurement with the closest time stamp needs to be selected, and the carrier phase measurement at this time is more reliable. In addition, a subsequent process may be performed, for example, a phase value of the [ C2-K/2:c2+k/2] subcarrier may be calculated according to the phase Phi1 and the slope value S1 of the C1 subcarrier, for example, the phase corresponding to the c1+5 carrier is mod (Phi 1 x Phi2/Phi1+5 x S1, 1). Then, selecting proper subcarrier phase values, estimating the whole circumference by using a Chinese Remainder Theorem (CRT), recovering more accurate propagation delay, and then combining carrier phase measurement values of positioning reference equipment (PRU) (the mode of reporting the carrier phase measurement values by the PRU is the same as that of the steps 2 and 3), and differentiating again to obtain carrier phase double difference values of eliminating time frequency offset for subsequent position calculation;

the above embodiments introduce the information transmission method and the carrier phase positioning method of the present invention, and the following describes the devices corresponding to the methods with reference to the accompanying drawings:

as shown in fig. 6, an embodiment of the present invention provides an information transmission apparatus 600, alternatively the information transmission apparatus 600 may be applied to a terminal, the apparatus 600 including:

A transmitting unit 610, configured to perform carrier phase measurement according to the first signal, and transmit carrier phase measurement related information of N first carriers to a location management function LMF entity;

wherein N is a positive integer.

Optionally, the carrier phase measurement includes at least one of:

the carrier phase of the first carrier measures an absolute value;

wherein the reliability information includes at least one of:

the system comprises indication information for indicating the sight distance or the non-sight distance, a first path spectrum peak slope, a Lese factor, a carrier-to-noise ratio, a signal-to-noise ratio, a terminal receiving/transmitting time error group Rx/Tx TEG, an antenna phase center offset, a time stamp, reference signal receiving power RSRP, a first path RSRP, an additional path RSRP downlink reference signal time difference DL-RSTD and a downlink departure angle DL-AOD.

Optionally, the sending unit 610 is further configured to:

Or,

Optionally, the first signal is a positioning reference signal PRS sent by a base station.

It should be noted that, the above device provided in this embodiment of the present invention can implement all the method steps implemented in the method embodiment on the terminal side, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

As shown in fig. 7, the present embodiment provides an information transmission apparatus including a memory 71, a transceiver 72, and a processor 73; wherein the memory 71 is for storing a computer program; a transceiver 72 for transceiving data under control of the processor 73; such as transceiver 72, for receiving and transmitting data under the control of processor 73; the processor 73 is configured to read the computer program in the memory 71 and perform the following operations:

wherein N is a positive integer.

Optionally, the carrier phase measurement includes at least one of:

the carrier phase of the first carrier measures an absolute value;

Wherein the reliability information includes at least one of:

Optionally, the processor 73 is configured to read the computer program in the memory 71 and perform the following operations:

Or,

Wherein in fig. 7, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 73 and various circuits of memory represented by memory 71, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 72 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including transmission media including wireless channels, wired channels, optical cables, and the like. The user interface 74 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 73 is responsible for managing the bus architecture and general processing, and the memory 71 may store data used by the processor 73 in performing operations.

Alternatively, the processor 73 may be a CPU (central processing unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multi-core architecture.

The processor is operable to perform any of the methods provided by embodiments of the present application in accordance with the obtained executable instructions by invoking a computer program stored in a memory. The processor and the memory may also be physically separate.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented in the method embodiment on the terminal side, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

The embodiment of the present application further provides a processor readable storage medium, where the processor readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute all the method steps implemented by the terminal side method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

As shown in fig. 8, the embodiment of the present invention further provides an information transmission apparatus 800, alternatively the information transmission apparatus 800 may be applied to a base station, and the apparatus 800 includes:

a transmitting unit 810, configured to perform carrier phase measurement according to the second signal, and transmit carrier phase measurement related information of the N first carriers to the location management function LMF entity;

wherein N is a positive integer.

Optionally, the carrier phase measurement includes at least one of:

the carrier phase of the first carrier measures an absolute value;

wherein the reliability information includes at least one of:

Optionally, the sending unit 810 is further configured to:

or,

It should be noted that, the above device provided in this embodiment of the present invention can implement all the method steps implemented in the method embodiment on the base station side, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

In order to better achieve the above object, as shown in fig. 9, there is provided an information transmission apparatus including a memory 91, a transceiver 92, and a processor 93; wherein the memory 91 is for storing a computer program; a transceiver 92 for transceiving data under the control of the processor 93; such as transceiver 92, for receiving and transmitting data under the control of processor 93; the processor 93 is configured to read the computer program in the memory 91 and perform the following operations:

wherein N is a positive integer.

Optionally, the carrier phase measurement includes at least one of:

the carrier phase of the first carrier measures an absolute value;

wherein the reliability information includes at least one of:

the system comprises indication information for indicating the sight distance or the non-sight distance, a first path spectrum peak slope, a Lese factor, a carrier-to-noise ratio, a signal-to-noise ratio, a TRP receiving/transmitting time error group Rx/Tx TEG, an antenna phase center offset, a reporting time stamp, reference signal receiving power RSRP, a first path RSRP, an additional path RSRP uplink arrival time measurement value UL-RTOA and an uplink arrival angle UL-AOA.

Optionally, the processor 93 is configured to read the computer program in the memory 91 and perform the following operations:

or,

Wherein in fig. 9, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 93 and various circuits of memory represented by memory 91, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 92 may be multiple elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 93 is responsible for managing the bus architecture and general processing, and the memory 91 may store data used by the processor 93 in performing operations.

The processor 93 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or a multi-core architecture.

The embodiment of the present invention further provides a processor readable storage medium, where the processor readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute all the method steps implemented by the method embodiment on the base station side, and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in the present embodiment are omitted.

As shown in fig. 10, an embodiment of the present invention provides a carrier phase positioning apparatus 1000, alternatively the carrier phase positioning apparatus 1000 may be applied to an LMF entity, and the apparatus 1000 includes:

a receiving unit 1010, configured to receive carrier phase measurement related information of N first carriers sent by a terminal or a base station; wherein N is a positive integer;

and a processing unit 1020 configured to perform a location resolution process for the terminal according to the carrier phase measurement related information.

Optionally, the carrier phase measurement related information includes: in the case of the carrier phase measurement value of the first carrier and at least one parameter corresponding to the first carrier, the processing unit 1020 is further configured to:

determining a carrier phase measurement value of a second carrier in an effective frequency domain range where the first carrier is located according to at least one parameter corresponding to the first carrier and the carrier phase measurement value of the first carrier;

determining an optimal carrier phase measurement value from the carrier phase measurement values of the N first carriers and the carrier phase measurement values of the second carriers according to the carrier phase measurement related information;

and according to the optimal carrier phase measurement value, performing position resolving processing on the terminal.

It should be noted that, the above device provided in this embodiment of the present invention can implement all the method steps implemented in the LMF side method embodiment, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

In order to better achieve the above objects, an embodiment of the present invention provides an information transmission device, including a memory, a transceiver, and a processor; wherein the memory is used for storing a computer program; the transceiver is used for receiving and transmitting data under the control of the processor; such as a transceiver for receiving and transmitting data under the control of a processor; the processor is configured to read the computer program in the memory and perform the following operations:

Optionally, the carrier phase measurement related information includes: the carrier phase measurement value of the first carrier and at least one parameter corresponding to the first carrier; the processor is configured to read the computer program in the memory and perform the following operations:

Where a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by a processor and various circuits of memory represented by a memory, are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver may be a plurality of elements, i.e. comprising a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor in performing operations.

The processor may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

The embodiment of the present invention further provides a processor readable storage medium, where the processor readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute all the method steps implemented by the method embodiment on the LMF side, and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in the present embodiment are omitted herein.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Furthermore, it should be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. Also, the steps of performing the series of processes described above may naturally be performed in chronological order in the order of description, but are not necessarily performed in chronological order, and some steps may be performed in parallel or independently of each other. It will be appreciated by those of ordinary skill in the art that all or any of the steps or components of the methods and apparatus of the present invention may be implemented in hardware, firmware, software, or a combination thereof in any computing device (including processors, storage media, etc.) or network of computing devices, as would be apparent to one of ordinary skill in the art after reading this description of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. An information transmission method, comprising:

the terminal performs carrier phase measurement according to the first signals and sends carrier phase measurement related information of N first carriers to the location management function LMF entity;

wherein N is a positive integer.

2. The information transmission method according to claim 1, wherein the carrier-phase measurement related information includes at least one of:

a carrier phase measurement of the first carrier;

identification information of the first carrier wave;

at least one parameter corresponding to the first carrier;

3. The information transmission method according to claim 2, wherein the at least one parameter includes: a slope value, and/or a target value for indicating the effective frequency domain range;

4. The information transmission method according to claim 2, wherein the identification information includes at least one of:

a carrier index;

a center carrier frequency;

carrier spacing.

5. The information transmission method according to any one of claims 2 to 4, characterized in that the carrier phase measurement value includes at least one of:

the carrier phase of the first carrier measures an absolute value;

6. The information transmission method according to any one of claims 2 to 4, characterized in that the carrier phase measurement related information further includes: reliability information of the carrier phase measurements;

wherein the reliability information includes at least one of:

7. The method according to any one of claims 1 to 4, wherein the transmitting carrier phase measurement related information of the N first carriers to the location management function LMF entity includes:

8. The method according to any one of claims 1 to 4, wherein the transmitting carrier phase measurement related information of the N first carriers to the location management function LMF entity includes:

9. The method according to any one of claims 1 to 4, wherein the transmitting carrier phase measurement related information of the N first carriers to the location management function LMF entity includes:

or,

10. The information transmission method according to any one of claims 1 to 4, characterized in that the first signal is a positioning reference signal PRS transmitted by a base station.

11. An information transmission method, comprising:

wherein N is a positive integer.

12. The information transmission method according to claim 11, wherein the carrier-phase measurement related information includes at least one of:

a carrier phase measurement of the first carrier;

identification information of the first carrier wave;

at least one parameter corresponding to the first carrier;

13. The information transmission method according to claim 12, wherein the at least one parameter includes: a slope value, and/or a target value for indicating the effective frequency domain range;

14. The information transmission method according to claim 12, wherein the identification information includes at least one of:

a carrier index;

a center carrier frequency;

carrier spacing.

15. The information transmission method according to any one of claims 12 to 14, characterized in that the carrier phase measurement value includes at least one of:

the carrier phase of the first carrier measures an absolute value;

16. The information transmission method according to any one of claims 12 to 14, characterized in that the carrier phase measurement related information further includes: reliability information of the carrier phase measurements;

wherein the reliability information includes at least one of:

17. The method according to any one of claims 11 to 14, wherein the transmitting carrier phase measurement related information of the N first carriers to the location management function LMF entity comprises:

18. The method according to any one of claims 11 to 14, wherein the transmitting carrier phase measurement related information of the N first carriers to the location management function LMF entity comprises:

19. The method according to any one of claims 11 to 14, wherein the transmitting carrier phase measurement related information of the N first carriers to the location management function LMF entity comprises:

or,

20. The information transmission method according to any one of claims 11 to 14, characterized in that the second signal is a sounding reference signal SRS transmitted by a terminal.

21. A carrier phase positioning method, comprising:

22. The carrier-phase positioning method according to claim 21, wherein, when the carrier-phase measurement related information includes the carrier-phase measurement value of the first carrier and at least one parameter corresponding to the first carrier, the LMF entity performs a position calculation process for the terminal according to the carrier-phase measurement related information, including:

23. An information transmission device is characterized by comprising a memory, a transceiver and a processor;

wherein N is a positive integer.

24. The information transmission apparatus according to claim 23, wherein the carrier-phase measurement related information includes at least one of:

a carrier phase measurement of the first carrier;

identification information of the first carrier wave;

at least one parameter corresponding to the first carrier;

25. The information transmission apparatus according to claim 24, wherein the carrier-phase measurement related information further comprises: reliability information of the carrier phase measurements;

Wherein the reliability information includes at least one of:

26. The information transmission apparatus according to claim 23 or 24, wherein the processor is configured to read the computer program in the memory and perform the following operations:

27. The information transmission apparatus according to claim 23 or 24, wherein the processor is configured to read the computer program in the memory and perform the following operations:

28. The information transmission apparatus according to claim 23 or 24, wherein the processor is configured to read the computer program in the memory and perform the following operations:

or,

29. An information transmission apparatus, comprising:

wherein N is a positive integer.

30. An information transmission device is characterized by comprising a memory, a transceiver and a processor;

wherein N is a positive integer.

31. The information transmission apparatus according to claim 30, wherein the carrier-phase measurement related information includes at least one of:

A carrier phase measurement of the first carrier;

identification information of the first carrier wave;

at least one parameter corresponding to the first carrier;

32. The information transmission apparatus according to claim 31, wherein the carrier-phase measurement related information further comprises: reliability information of the carrier phase measurements;

wherein the reliability information includes at least one of:

33. The information transmission apparatus according to claim 30 or 31, wherein the processor is configured to read the computer program in the memory and perform the following operations:

34. The information transmission apparatus according to claim 30 or 31, wherein the processor is configured to read the computer program in the memory and perform the following operations:

35. The information transmission apparatus according to claim 30 or 31, wherein the processor is configured to read the computer program in the memory and perform the following operations:

or,

36. An information transmission apparatus, comprising:

wherein N is a positive integer.

37. A carrier phase positioning device, comprising a memory, a transceiver, and a processor;

38. A carrier phase positioning device, comprising:

39. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to execute the steps of the information transmission method of any one of claims 1 to 10, or for causing the processor to execute the steps of the information transmission method of any one of claims 11 to 20, or for causing the processor to execute the steps of the carrier phase positioning method of any one of claims 21 to 22.